/*
-----------------------------------------------------------------------------------------------
Copyright (C) 2013 Henry van Merode. All rights reserved.

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-----------------------------------------------------------------------------------------------
*/

#ifndef __PU_SPHERE_COLLIDER_H__
#define __PU_SPHERE_COLLIDER_H__

#include "ParticleUniversePrerequisites.h"
#include "ParticleUniverseBaseCollider.h"
#include "ParticleUniverseSimpleSphere.h"

namespace ParticleUniverse
{
	/** The SphereCollider is a sphere shape that collides with the particles. The SphereCollider can only collide 
		with particles that are created within the same ParticleTechnique as where the SphereCollider is registered.
    */
	class _ParticleUniverseExport SphereCollider : public BaseCollider
	{
		public:
			// Constants
			static const Real DEFAULT_RADIUS;

			SphereCollider(void);
	        virtual ~SphereCollider(void){};

			/** Returns the radius of the sphere
			*/
			const Real getRadius(void) const;

			/** Sets the radius of the sphere
			*/
			void setRadius(const Real radius);

			/** Returns indication whether the collision is inside or outside of the box
			@remarks
				If value is true, the collision is inside of the box.
			*/
			bool isInnerCollision(void) const;

			/** Set indication whether the collision is inside or outside of the box
			@remarks
				If value is set to true, the collision is inside of the box.
			*/
			void setInnerCollision(bool innerCollision);

			/** 
			*/
			void calculateDirectionAfterCollision(Particle* particle, Vector3 distance, Real distanceLength);

			/** @copydoc ParticleAffector::_preProcessParticles */
			virtual void _preProcessParticles(ParticleTechnique* particleTechnique, Real timeElapsed);

			/** @copydoc ParticleAffector::_affect */
			virtual void _affect(ParticleTechnique* particleTechnique, Particle* particle, Real timeElapsed);

			/** @copydoc ParticleAffector::copyAttributesTo */
			virtual void copyAttributesTo (ParticleAffector* affector);

		protected:
			Real mRadius;
			SimpleSphere mSphere;
			Vector3 mPredictedPosition;
			bool mInnerCollision;
	};

}
#endif
